Takegawa's 4th bearing crank support provides added stability and longevity to the crankshaft, reducing the chance of runout over time. Strong addition to high power builds. Available for the OG and SF Groms 2014 to 2020, but version specific for earlier OG models as follows: - MM-4182 - JC61 (OG) serial numbers up to 1299999
- MM-4183 - JC61 (OG) serial numbers from 1300000 and up
- MM-4183 - JC75 (SF) ALL
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